Physics (AS & A Level) · Oct / Nov 2016 · Paper 12 · Question 6

An experiment to determine atmospheric pressure P uses the equation P = ρgh where ρ = (13 600 ± 100) kg m–3, g = (9.81 ± 0.02) m s–2, h = (0.762 ± 0.005) m. What is the value of P, with its uncertainty, when stated to an appropriate number of significant figures?

1. A(1.0166 ± 0.0162) × 10^5 Pa
2. B(1.017 ± 0.016) × 10^5 Pa
3. C(1.017 ± 1.6%) × 10^5 Pa
4. D(1.02 ± 0.02) × 10^5 Pa

As printed in the paper